Wear resistance and microstructure of Zn-Al-Si and Zn-Al-Cu alloys

Lee, Pekwah Pearl; Savaşkan, Temel; Laufer, E. E.

doi:10.1016/0043-1648(87)90245-6

Cited by 142 publications

(58 citation statements)

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“…Effect of copper addition on the microstructure of ZA21 cast alloy Microphotographs of figure4 shows the optical microphotographs of ZA21 and ZA21-4%Cu, it can be seen that the microstructure consists of primary aluminium-rich α zinc-rich η and copper-rich ε phases. This is in consistence with the previous work of other researchers, [2,3,4].…”

Section: Resultssupporting

confidence: 67%

“…One should develop techniques to predict the surface roughness of a product before milling in order to evaluate the quality of machining parameters such as feed rate or spindle speed for keeping a desired surface. Zn-based alloys have a number of advantages over traditional bearing materials [1,2,3]. These advantages can be summarized as high resistance to wear, excellent castability and low cost [4,5,6].…”

Section: Introductionmentioning

confidence: 99%

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Effect of copper addition at a rate of 4% weight on the machininability of ZA-21A1 cast alloy by CNC milling

Al-Qawabah

Zaid

2014

IOP Conf. Ser.: Mater. Sci. Eng.

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Section: Resultssupporting

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Effect of copper addition at a rate of 4% weight on the machininability of ZA-21A1 cast alloy by CNC milling

Al-Qawabah

Zaid

2014

IOP Conf. Ser.: Mater. Sci. Eng.

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“…It is also known that the mechanical and tribological properties of zinc-aluminium alloys can be greatly improved by additions of copper and/or silicon [2,[5][6][7][8][9][10][11][12][13][14]. Copper was found to be a more effective alloying addition in increasing the strength of the alloys, while silicon showed a more powerful effect on their wear resistance [2,[5][6][7][8].…”

Section: Introductionmentioning

confidence: 96%

“…Zinc-aluminium monotectoid alloys have been proven to be superior to either eutectic or eutectoid zinc-aluminium alloys as far as their hardness and strength are concerned [1][2][3][4][5][6]. It is also known that the mechanical and tribological properties of zinc-aluminium alloys can be greatly improved by additions of copper and/or silicon [2,[5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Silicon Content on the Mechanical Properties and Lubricated Wear Behaviour of Al–40Zn–3Cu–(0–5)Si Alloys

Alemdağ

Savaşkan

2008

Tribol Lett

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In this work, one ternary Al-40Zn-3Cu and seven quaternary Al-40Zn-3Cu-(0.25-5)Si alloys were synthesized by permanent mould casting. Their microstructure, mechanical and lubricated wear properties were investigated using appropriate test apparatus and techniques. As the silicon content increased the hardness of the alloys increased, but their elongation to fracture decreased. Tensile strength of the alloys decreased with increasing silicon content following a sharp decrease and a slight increase. Among the silicon-containing quaternary alloys the highest and the lowest tensile strength values (348 and 305 MPa) were obtained with the Al-40Zn-3Cu-2Si and Al-40Zn-3Cu-5Si alloys, respectively, while the base alloy (Al-40Zn-3Cu) exhibited a tensile strength of 390 MPa. However, the volume loss due to wear of the alloys increased with increasing silicon content after showing an initial increase and a sharp decrease. The lowest wear loss was obtained with the alloy containing approximately 2% Si which has the highest tensile strength among the quaternary alloys containing more than 0.25% Si. Wear surfaces of the alloys were characterized mainly by smearing indicating that adhesion is the dominant wear mechanism for the experimental alloys.

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“…The promising way is to incorporate or generate thermally stable microconstituent particles, e.g., by adding an element with a high melting point such as silicon to form in situ silicon particles. The resulting Si particle (Si p ) reinforced ZA27 composites (Si p /ZA27) can overcome the disadvantages of the ZA27 alloy (Lee et al, 1987;Savaşkan and Bican, 2005;Savaşkan and Aydıner, 2004;Prasad, 2000Prasad, , 2004Harmsen et al, 1996;Çuvalcı and Baş, 2004;Jian et al, 1993;Shi et al, 1997). However, owing to the wide solidification interval of the ZA27 alloy matrix, the composite is also prone to shrinkage and other casting defects, and therefore, the mechanical properties will be deteriorated (Calayag, 1983;Apelian et al, 1981).…”

Section: Introductionmentioning

confidence: 99%

Effects of reheating temperature and time on microstructure and tensile properties of thixoformed in situ Si<SUB align="right">p/ZA27 composites

Wang

Chen

Zhang

2017

IJMPT

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Abstract:The effects of reheating temperature and time on microstructure and tensile properties of thixoformed in situ Si p /ZA27 composites have been investigated. Simultaneously, the effect of the Si particles on the tensile properties has also been studied. The results indicate that the two parameters have similar effects on the composition, fraction and segregation degree of the liquid phase and the size and shape of the Si particles, and thus the solidification behaviour, the resulting microstructure, the fracture regime and the tensile properties. But in contrast, the effects of the reheating temperature are larger than those of the reheating time; the effects of the changes in the Si particle size and shape are smaller than those of the changes in the other factors. The optimum tensile properties, the ultimate tensile strength of 363 MPa and the elongation of 0.97%, can be obtained after being thixoformed under reheating for 70 min at 465°C. The Si particles exhibit two behaviours during tensile testing; namely fragmentation and interfacial de-bonding. This indicates that the load transfer mechanism is the main strengthening mechanism of the Si particles.Keywords: Si p /ZA27 composites; thixoforming; microstructure; tensile properties; fracture.Reference to this paper should be made as follows: Wang, B., Chen, T.J. and Zhang, S.Q. (2017) Biographical notes: B. Wang is a graduate student and studied on the effect of process parameters on microstructure and tensile properties of thixoformed in situ Si p /ZA27 composites at Lanzhou University of Technology (LUT).T.J. Chen is a Professor at LUT. His research focuses on fabrication and forming of nonferrous alloys and their composites, such as traditional casting and semisolid forming of Al, Zn, Mg-based alloys and their composites. His research area also covers corrosion behaviours and surface modification of Mg alloys.Effects of reheating temperature and time on microstructure 127 S.Q. Zhang is a doctoral student and studied on the effect of process parameters on microstructure and tensile properties of thixoformed in situ Mg 2 Si/AM60B composites at LUT.

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Wear resistance and microstructure of Zn-Al-Si and Zn-Al-Cu alloys

Cited by 142 publications

References 1 publication

Effect of copper addition at a rate of 4% weight on the machininability of ZA-21A1 cast alloy by CNC milling

Effect of copper addition at a rate of 4% weight on the machininability of ZA-21A1 cast alloy by CNC milling

Effects of Silicon Content on the Mechanical Properties and Lubricated Wear Behaviour of Al–40Zn–3Cu–(0–5)Si Alloys

Effects of reheating temperature and time on microstructure and tensile properties of thixoformed in situ Si<SUB align="right">p/ZA27 composites

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